Biodiversity Data Journal 8: e50451 doi: 10.3897/BDJ.8.e50451 Data Paper Transdisciplinary Bioblitz: Rapid biotic and abiotic inventory allows studying environmental changes over 60 years at the Biological Field Station of Paimpont (Brittany, France) and opens new interdisciplinary research opportunities Annegret Nicolai‡, Muriel Guernion‡, Sarah Guillocheau‡‡, Kevin Hoeffner , Pascaline Le Gouar‡, Nelly Ménard‡, Christophe Piscart‡, Dominique Vallet‡, Morgane E. T. Herv采, Elora Benezeth , Hughes Chedanne‡, Jérémie Blémus‡, Philippe Vernon‡‡, Daniel Cylly , Hoël Hotte‡§, Grégoire Loïs , Barbara Mai|, Grégoire Perez ¶, Tiphaine Ouisse¶¶, Cécile Monard , Claudia Wiegand¶, Jean-Pierre Caudal¶, Alain Butet¶, Maxime Dahirel¶¶, Lou Barbe , Manon Balbi¶¶, Valérie Briand , Myriam Bormans¶, Maryvonne Charrier¶, Guillaume Bouger#¶, Vincent Jung , Cécile Le Lann¶, Alexandrine Pannard¶, Julien Petillon¶¶, Yann Rantier , Dominique Marguerie¶¶, Kevin Tougeron , Pierre Devogel¤, Sébastien Dugravot¤, Thomas Dubos «, Maël Garrin», Mathurin Carnet», Clément Gouraud», Audrey Chambet˄, Joël Esnault˅, Maxime Poupelin¦ˀ, Erik Welk , Astrid Bütofˁ, Glenn F. Dubois₵, Guillaume Humbertℓ, Odile Marie-Réau₰,₱ ₳Olivier Norvez , Gaëlle Richard , Benoît Froger₴₣, Céline Rochais , Martin Potthoff₮,₦ ₭Khaoula Ayati , Alain Bellido , Alain Rissel₭, Mathieu Santonja₲, Jacques-Olivier Farcy‽, Eric Collias|, Lina Sene ‡, Daniel Cluzeau‡,₩ Régis Supper ‡ Université Rennes 1, Station Biologique de Paimpont, UMR-CNRS 6553 EcoBio/OSUR, Paimpont, France § MNHN, UMR 7204 CESCO, Paris, France | unaffiliated, Rennes, France ¶ Université Rennes 1, UMR-CNRS 6553 EcoBio/OSUR, Rennes, France # Université Rennes 1, Observatoire des Sciences de l'Univers de Rennes (OSUR), UMS 3343, Rennes, France ¤ Université Rennes 1, EA 7462 G-TUBE, Rennes, France « Groupe Mammalogique de Bretagne, Redon, France » GRETIA, Rennes, France ˄ Université Rennes 1, Collections de botanique et herbiers, Rennes, France ˅ Conservatoire Botanique National de Brest, Brest, France ¦ CPN les p'tites natures de Brocéliande, Paimpont, France ˀ Martin-Luther-Universität Halle-Wittenberg, Halle, Germany ˁ unaffiliated, Halle, Germany ₵ Yandra, Concoret, France ℓ Université Pierre et Marie Curie, Paris, France ₰ CNER, Rennes, France ₱ Agence Française de la Biodiversité, Cesson-Sévigné, France ₳ Université Rennes 1, Collection Zoologie, Rennes, France ₴ Bretagne Vivante, Brest, France ₣ Université Rennes 1, Station Biologique de Paimpont, UMR 6552 EthoS, Paimpont, France ₮ Universität Göttingen, CBL, Göttingen, Germany ₦ Faculty of Science of Bizerte, Zarzuna, Tunisia © Nicolai A et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 2 Nicolai A et al ₭ Encyclopédie de Brocéliande, Paimpont, France ₲ Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France ‽ Université Rennes 1, DSI, Rennes, France ₩ Université Rennes 1, Station Biologique de Paimpont, Paimpont, France Corresponding author: Annegret Nicolai ([email protected]) Academic editor: Quentin Groom Received: 24 Jan 2020 | Accepted: 29 Feb 2020 | Published: 27 Mar 2020 Citation: Nicolai A, Guernion M, Guillocheau S, Hoeffner K, Le Gouar P, Ménard N, Piscart C, Vallet D, Hervé MET, Benezeth E, Chedanne H, Blémus J, Vernon P, Cylly D, Hotte H, Loïs G, Mai B, Perez G, Ouisse T, Monard C, Wiegand C, Caudal J-P, Butet A, Dahirel M, Barbe L, Balbi M, Briand V, Bormans M, Charrier M, Bouger G, Jung V, Le Lann C, Pannard A, Petillon J, Rantier Y, Marguerie D, Tougeron K, Devogel P, Dugravot S, Dubos T, Garrin M, Carnet M, Gouraud C, Chambet A, Esnault J, Poupelin M, Welk E, Bütof A, Dubois GF, Humbert G, Marie-Réau O, Norvez O, Richard G, Froger B, Rochais C, Potthoff M, Ayati K, Bellido A, Rissel A, Santonja M, Farcy J-O, Collias E, Sene L, Cluzeau D, Supper R (2020) Transdisciplinary Bioblitz: Rapid biotic and abiotic inventory allows studying environmental changes over 60 years at the Biological Field Station of Paimpont (Brittany, France) and opens new interdisciplinary research opportunities. Biodiversity Data Journal 8: e50451. https://doi.org/10.3897/BDJ.8.e50451 Abstract Background The Biological Field Station of Paimpont (Station Biologique de Paimpont, SBP), owned by the University of Rennes and located in the Brocéliande Forest of Brittany (France), has been hosting student scientific research and field trips during the last 60 years. The study area of the SBP is a landscape mosaic of 17 ha composed of gorse moors, forests, prairies, ponds and creeks. Land use has evolved over time. Historical surveys by students and researchers focused on insects and birds. With this study, we aimed to increase the range of taxa observations, document changes in species composition and landscape and provide a basis for interdisciplinary research perspectives. We gathered historical data, implemented an all-taxon biodiversity inventory (ATBI) in different habitats of the SBP study area, measured abiotic factors in the air, water and soil and performed a photographical landscape observation during the BioBlitz held in July 2017. New information During the 24 h BioBlitz, organised by the SBP and the EcoBio lab from the University of Rennes and the French National Center of Scientific Research (CNRS), different habitats were individually sampled. Seventy-seven experts, accompanied by 120 citizens and 12 young people participating in the European Volunteer Service, observed, identified and databased 660 species covering 5 kingdoms, 8 phyla, 21 classes, 90 orders and 247 families. In total, there were 1819 occurrences including records identified to higher taxon ranks, thereby adding one more kingdom and four more phyla. Historical data collection Transdisciplinary Bioblitz: Rapid biotic and abiotic inventory allows studying ... 3 resulted in 1176 species and 4270 occurrences databased. We also recorded 13 climatic parameters, 10 soil parameters and 18 water parameters during the BioBlitz. Current habitats were mapped and socio-ecological landscape changes were assessed with a diachronic approach using 32 historical photographs and historical maps. The coupling of historical biodiversity data with new biotic and abiotic data and a photographic comparison of landscape changes allows an integrative understanding of how the SBP changed from agriculturally-used land to a managed natural area within the last 60 years. Hence, this BioBlitz represents an important holistic sampling of biodiversity for studies on trophic webs or on trophic interactions or on very diverse, but connected, habitats. The integration of social, biotic and abiotic data opens innovative research opportunities on the evolution of socio-ecosystems and landscapes. Keywords ATBI, citizen science, terrestrial, land use, aquatic, historical biodiversity data, physico- chemical parameters, photographical landscape observation, soil biota, plant communities, multi-habitat cartography, long-term survey, multi-trophic sampling Introduction Biodiversity is severely threatened on a global scale, due to extensive alteration of habitats, over-exploitation, introduction of exotic species, environmental pollution and climate change, subsequently affecting humanity (Pimm et al. 2014). Inventories of biodiversity at various taxonomic levels and spatio-temporal scales were deemed necessary by the Science Policy Platform on Biodiversity and Ecosystem Services (Díaz et al. 2015) to reach the Convention on Biological Diversity’s Aichi Targets of the Strategic Plan for Biodiversity 2011–2020 (https://www.cbd.int/sp/targets). Knowledge of past and current biodiversity is thus needed for management decisions from local to global scales. Long-term biodiversity observations, coupled with environmental parameters estimations, are necessary tools to assess ecological changes and ecosystem trends in the face of numerous threats to biodiversity. Specifically, participative biodiversity inventories address a component of Aichi target 19, that is, to improve and disseminate biodiversity knowledge. Participative biodiversity inventories through citizen science (scientific research involving volunteers for collecting and processing data, Silvertown 2009) contribute worldwide to 55% of species records in the database of the Global Biodiversity Information Facility (GBIF, www.gbif.org, Chandler et al. 2017). While more than half of all citizen science projects in Europe publish their data through GBIF, less than 1% of citizen science data are provided by France (Chandler et al. 2017). There is a great need for participative biodiversity assessments in France, for example, BioBlitzes as citizen science events (Silvertown 2009) and historical citizen science (Clavero et al. 2017), to improve biodiversity knowledge and to increase the awareness and therewith the valuation of species in a given area. During a BioBlitz, experts and the general public intensively survey and map as many species as they can in 4 Nicolai A et al one location over a given, short time, usually 1-2 days (Lundmark 2003) thereby providing essential biodiversity variables (Pereira et al. 2013), such as taxonomic diversity data at local scales (Chandler et al. 2017). Current citizen science data, combined with historical data, allow assessment of biodiversity change (Clavero et al. 2017). Greater biodiversity knowledge and appropriation